T8 4W 1 foot LED T5 tube replacement bulb for traditional 10 Watt fluorescent tube with comparable light output.No Buzzing,No Mercury/Poisons,No glare or shadowing. Consumes 4 Watts of power using 30PCS high power 2835 SMD LEDs. This tube contains no mercury and is in accordance with CE and FCC testing standards . Available in Pure White and Warm white with 150° beam angle. Includes LED compatible starter.(use the 90~260 VAC).